Potassium Citrate

Alkalizing potassium salt that prevents kidney stone formation, supports kidney health, and maintains optimal urinary pH balance

Scientific nameTripotassium citrate monohydrate FormulaK3C6H5O7·H2O Molecular weight324.4 g/mol CAS6100-05-6

95 absorption score

6 safety / 10

40 USD per month

36 elemental potassium %

5 documented interactions

Check it against something

Evidence level B

Potassium Citrate with:

78 out of 100

Works better together Compatible. Timing differs, so follow each supplement's own window.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Kidney stone prevention and dissolution

Prevents formation of calcium oxalate and uric acid kidney stones

Alkalizes urine and increases citrate excretion, inhibiting stone crystallization Evidence A-grade 2-12 weeks

Urinary pH optimization

Maintains optimal urinary pH between 6.0-7.0 for kidney health

Citrate acts as urinary buffer maintaining ideal pH for stone prevention Evidence A-grade 1-4 weeks

Enhanced citrate excretion

Increases urinary citrate levels which naturally prevent stone formation

Provides bioavailable citrate that is concentrated and excreted in urine Evidence A-grade 1-2 weeks

Cardiovascular and blood pressure support

Supports healthy blood pressure and cardiovascular function

Potassium supports healthy blood pressure and counteracts sodium effects Evidence A-grade 2-8 weeks

Bone health and acid-base balance

Supports bone health through improved acid-base balance

Alkalizing effect reduces bone calcium loss and supports skeletal health Evidence B-grade 8-24 weeks

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Turmeric Anti-inflammatory & antioxidant 300-1000mg A 3% Glutathione Master antioxidant & detox support 250-750mg B 20% Astaxanthin Superior antioxidant & skin protection 4-12mg B 20% SAM-e Mood support & liver health 400-800mg A 70% Plant Collagen Vegan collagen support & antioxidants 2-5g C 70% Quercetin Immune support & allergy relief 500-1000mg B 5%

Every pair we checked

12 combinations scored by the engine

Potassium Citrate + Caffeine No documented interaction either way No known interaction 70

Potassium Citrate + Creatine Monohydrate No documented interaction either way No known interaction 70

Potassium Citrate + Vitamin D3 No documented interaction either way No known interaction 70

Potassium Citrate + Calcium Carbonate No documented interaction either way No known interaction 70

Potassium Citrate + Whey Protein No documented interaction either way No known interaction 70

Potassium Citrate + Lactase No documented interaction either way No known interaction 70

Potassium Citrate + Bovine Collagen No documented interaction either way No known interaction 70

Potassium Citrate + DHA No documented interaction either way No known interaction 70

Potassium Citrate + Turmeric No documented interaction either way No known interaction 70

Potassium Citrate + Fish Oil (EPA/DHA) No documented interaction either way No known interaction 70

Potassium Citrate + Marine Collagen No documented interaction either way No known interaction 70

Potassium Citrate + Magnesium Oxide Enhanced kidney stone prevention and mineral balance Works better together 78

Dosage

With meals

Daily15-60 mEq

Stone prevention15-30 mEq daily

Recurrent stones20-40 mEq daily

Uric acid stones30-60 mEq daily

Maintenance10-20 mEq daily

When to expect it

First Effects1-2 weeks for urinary pH changes and citrate elevation

Peak Benefits6-12 weeks for sustained stone prevention and kidney protection

Deficiency DevelopmentLow citrate levels develop gradually with diet and aging

Toxicity OnsetHours to days if hyperkalemia develops

How to measure it

$100-200

MarkerSerum potassium, kidney function (creatinine, BUN), urinalysis with pH and citrate

OptimalPotassium 3.5-5.0 mEq/L, urine pH 6.0-7.0, adequate citrate excretion

Deficient belowLow urine citrate, acidic urine pH <6.0

FrequencyMonthly initially, then every 3-6 months with stable use

What people actually reported to the FDA

CAERS, 90 reports naming it as the suspect

Most reported effects

Vomiting 10

Nausea 9

Dehydration 9

Hypersensitivity 8

Myocardial infarction 7

Named as the suspect 90 reports of 487 that mention it at all

Serious outcome 87% hospitalisation, emergency room or worse

Other Serious or Important Medical Event58

Hospitalization39

Visited Emergency Room32

Reports are voluntary and unverified — they record what someone experienced while taking something, not what the compound caused. Counts skew towards products people take a lot of, and a serious outcome is more likely to be reported than a mild one, so these are not rates. How we filter them →

What actually reaches you

The label counts the carrier, your body does not

Elemental potassium 36.2% of 324.4 g/mol

Absorption Very high 95 of 100 · best absorbed form of this compound

Delivered daily 12.9 mg

Cost per 100 mg delivered $10.34 comparative — uses the absorption score, not a measured percentage

A 500 mg capsule of Potassium Citrate contains 181 mg of potassium. How much of that crosses into your blood is not measured for this form — the absorption score ranks it against other forms, it is not a share of the dose. How this is calculated →

Works better with

3 documented

Adequate Hydration

Essential for potassium citrate effectiveness and safety

Proper hydration supports citrate excretion and prevents concentrated urine · level A

Magnesium

Enhanced kidney stone prevention and mineral balance

Magnesium works with citrate to prevent stone formation · level B

Low Sodium Diet

Enhanced potassium benefits and stone prevention

Low sodium improves potassium utilization and reduces stone risk · level A

What not to take with Potassium Citrate

2 documented

High Sodium Intake

Excessive sodium counteracts potassium benefits

High sodium increases potassium excretion and stone formation risk · high significance

Dehydration

Inadequate fluids reduce effectiveness and increase toxicity risk

Concentrated urine reduces citrate effectiveness and increases potassium concentration · high significance

Medication interactions

Discuss these with a pharmacist before combining

ace-inhibitors-arbs High

Increased risk of hyperkalemia

What to do: Frequent potassium monitoring required

potassium-sparing-diuretics High

Dangerous hyperkalemia risk

What to do: Usually contraindicated together

Available forms

bioavailability compared

Potassium Citrate Extended-Release Tablets (Medical Grade) 95

Potassium Citrate Extended-Release Tablets (Medical Grade): FDA approved, Proven stone prevention, pH optimization, Cardiovascular benefits

Food sources

before you supplement

Potassium citrate supplements 15-60 mEq per dose · 95

Citrus fruits Natural citrate and potassium · 70

Alkali-rich vegetables Natural alkalizing compounds · 60

Lemon juice in water Natural citrate source · 65

Too little

deficiency signs

Low citrate (hypocitraturia) symptoms:
Increased kidney stone formation and recurrence
Acidic urine pH below 6.0
Calcium oxalate crystal formation
Uric acid stone development
Poor kidney stone prevention despite adequate hydration

Too much

toxicity signs

Hyperkalemia and potassium toxicity:
Dangerous heart rhythm abnormalities
Muscle weakness and paralysis
Severe gastrointestinal upset
Requires immediate medical attention if hyperkalemia develops

Who benefits most

kidney-stone-prevention

Primary prevention of calcium oxalate and uric acid kidney stones

15-30 mEq daily with medical supervision

recurrent-stone-formers

Prevention of kidney stone recurrence in chronic stone formers

20-40 mEq daily with medical supervision

low-citrate-levels

Treatment of hypocitraturia (low urinary citrate levels)

15-30 mEq daily with medical supervision

uric-acid-stones

Prevention and dissolution of uric acid kidney stones

30-60 mEq daily with medical supervision

acidic-urine-conditions

Urinary pH optimization for various kidney and metabolic conditions

15-30 mEq daily with medical supervision

Where to buy it

compare forms first

Look for Potassium Citrate at 15-60 mEq per serving. The form that matters here is Potassium Citrate Extended-Release Tablets (Medical Grade).

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What else affects it

Beyond other supplements

Adequate hydration

Essential for potassium citrate effectiveness and safety

Proper hydration supports citrate excretion and prevents concentrated urine

Low sodium diet

Enhanced potassium benefits and stone prevention

Low sodium improves potassium utilization and reduces stone risk

High sodium intake

Excessive sodium counteracts potassium benefits

High sodium increases potassium excretion and stone formation risk

Dehydration

Inadequate fluids reduce effectiveness and increase toxicity risk

Concentrated urine reduces citrate effectiveness and increases potassium concentration

How it works

Alkalizes urine by providing citrate buffer, increasing urinary pH to 6.0-7.0
Increases urinary citrate excretion, which binds calcium and prevents crystallization
Inhibits calcium oxalate and calcium phosphate crystal formation and growth
Promotes dissolution of existing uric acid stones through pH elevation
Provides potassium for cardiovascular health and blood pressure regulation
Improves overall acid-base balance reducing metabolic acidosis

Key findings

what the evidence supports

Extensive clinical evidence for kidney stone prevention
FDA-approved medication for stone prevention and treatment
Proven reduction in stone recurrence rates by up to 85%
Requires medical supervision due to hyperkalemia risk

Sources: NIH Examine.com · data reviewed 2026-08-02

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of Potassium Citrate?

Documented effects: Kidney stone prevention and dissolution; Urinary pH optimization; Enhanced citrate excretion; Cardiovascular and blood pressure support. Prevents formation of calcium oxalate and uric acid kidney stones

How much Potassium Citrate should you take per day?

The common daily range is 15-60 mEq. By goal — stone prevention: 15-30 mEq daily; recurrent stones: 20-40 mEq daily; uric acid stones: 30-60 mEq daily; maintenance: 10-20 mEq daily.

When is the best time to take Potassium Citrate?

With meals. First effects are typically reported within 1-2 weeks for urinary pH changes and citrate elevation.

What are the side effects of Potassium Citrate?

At excessive doses: Hyperkalemia and potassium toxicity:, Dangerous heart rhythm abnormalities, Muscle weakness and paralysis, Severe gastrointestinal upset, Requires immediate medical attention if hyperkalemia develops. Safety rating at normal doses is 6 out of 10.

What should you not take with Potassium Citrate?

Separate it from High Sodium Intake, Dehydration by two to four hours. Excessive sodium counteracts potassium benefits

Does Potassium Citrate interact with medications?

Documented interactions with ace-inhibitors-arbs, potassium-sparing-diuretics. Discuss these with a pharmacist before combining.

How do you know if you need Potassium Citrate?

The marker is Serum potassium, kidney function (creatinine, BUN), urinalysis with pH and citrate, optimal range Potassium 3.5-5.0 mEq/L, urine pH 6.0-7.0, adequate citrate excretion. Common deficiency signs: Low citrate (hypocitraturia) symptoms:, Increased kidney stone formation and recurrence, Acidic urine pH below 6.0, Calcium oxalate crystal formation.

Taken for

49 Liver & Detox

Turmeric · Vitamin C (Ascorbic Acid) · D-Mannose